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| n | a(n) |
|---|---|
| 1 | 528 |
| 2 | 6427791 |
| 3 | 35987024999 |
| 4 | 231638725420288 |
| 5 | 1458877292453477918 |
| 6 | 9223088985799640757493 |
[528,6427791,35987024999,231638725420288, 1458877292453477918,9223088985799640757493] |